diff --git a/Src/Dlhis.Basic/WorkGrids/Services/Implements/WorkGridScheduleService.cs b/Src/Dlhis.Basic/WorkGrids/Services/Implements/WorkGridScheduleService.cs
index edfe2b28..f074ebbb 100644
--- a/Src/Dlhis.Basic/WorkGrids/Services/Implements/WorkGridScheduleService.cs
+++ b/Src/Dlhis.Basic/WorkGrids/Services/Implements/WorkGridScheduleService.cs
@@ -329,8 +329,8 @@ public class WorkGridScheduleService : IWorkGridScheduleService
 
     public async Task<List<WorkGridScheduleMaximumConsecutiveDto>> MaximumConsecutiveUserCodesAsync(List<string> userCodes, int days, DateOnly date)
     {
-        var p = userCodes.Select(x => $"@param{x}").Join(",");
-        var values = userCodes.ToDictionary(x => $"param{x}", x => x);
+        var p = userCodes.Select(x => $"@param{x.Replace("-", "A_")}").Join(",");
+        var values = userCodes.ToDictionary(x => $"param{x.Replace("-", "A_")}", x => x);
 
         values.Add("dateBefore", date.AddDays(-1).ToString("yyyy-MM-dd"));
         values.Add("dateAfter", date.AddDays(1).ToString("yyyy-MM-dd"));